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Finding the Fourth Proportional to 616.82, 924.21 and 479.52

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Solution

The fourth proportional to 616.82, 924.21 and 479.52 is: 718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.82 : 924.21 = 479.52 : x
  2. Step 2: Convert to fraction form
    616.82/924.21 = 479.52/x
  3. Step 3: Cross multiply
    616.82x = 924.21 × 479.52
  4. Step 4: Simplify right side
    616.82x = 443,177.18
  5. Step 5: Solve for x
    x = 443,177.18/616.82
  6. Step 6: Final answer
    x = 718.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.